Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
×

Submission + - Mathematicians Uncomfortable With Ties To NSA, But Not Pulling Back (sciencemag.org)

An anonymous reader writes: When we talk about how the NSA operates, it's typically about the policymakers and what the agency should or should not do. It's worth remembering that the NSA is built upon the backs of world-class mathematicians, whom they aggressively recruit to make all their underlying surveillance technology work. A new piece in Science discusses how the relationship between mathematicians and the NSA has changed following the Snowden leaks (PDF). But as Peter Woit points out, these ethical conundrums are not actually spurring any change. This is perhaps due to the NSA's generous funding of mathematics-related research. The article talks about the American Mathematical Society, which until recently was led by David Vogan: "...after all was said and done, no action was taken. Vogan describes a meeting about the matter last year with an AMS governing committee as 'terrible,' revealing little interest among the rest of the society’s leadership in making a public statement about NSA’s ethics, let alone cutting ties. Ordinary AMS members, by and large, feel the same way, adds Vogan, who this week is handing over the presidency to Robert Bryant, a mathematician at Duke University in Durham, North Carolina. For now, U.S. mathematicians aren't willing to disown their shadowy but steadfast benefactor."

Submission + - How Gaseous, Neptune-Like Planets Can Become Habitable (washington.edu)

An anonymous reader writes: Life as we know it requires small, rocky planets. The gas giants of our solar system aren't habitable (to our knowledge), but a research team has discovered that smaller, Neptune-like planets can be transformed into gas-free, potentially habitable worlds with a little help from red dwarf stars. Such planets are usually formed far out in a planetary system, but tidal forces can cause them to migrate inward. When they reach the habitable zone of their host star, they absorb far larger amounts of x-ray and ultraviolet radiation. This can eventually boil off most of the the gas atmosphere, leaving behind the core: a small, rocky world capable of supporting life.

Comment Re:Is someone looking for a job? (Score 2) 80

The Falcon 9 (1.0 and 1.1 combined) has had one partial failure and 12 successful launches, the Antares one complete failure out of five launches, the Delta II one failure (and one partial failure) out of 152, the Delta IV Medium 20 successful launches with no failures, the IV heavy 7 successes and 1 partial failure on a test flight, the Atlas V 51 successes and 1 partial failure. Yes, the Delta III was horrible, but it was only launched three times back in the 90s and abandoned.

The DoD launch you're talking about happened in 2007. No other US company could get a satellite in GSO at the time. SpaceX had only launched two Falcon 1s for DARPA at that point, both too small, and both failures. Orbital at least had their Pegasus... with ~1/10th the required payload and a poor success rate.

I'm not a ULA apologist, they were simply the only game in town for US satellite launches, and charged accordingly. SpaceX's recent successes have put them on track to become serious competition, and that's great. But you'd be crazy to trust a new space company with high-value payloads until they have a few successful launches under their belt.

Comment Re:Is someone looking for a job? (Score 1) 80

There are only three US companies with LEO capabilities: ULA (Boeing/Lockheed), SpaceX, and Orbital.

Of those three, Orbital's Antares is currently grounded after its spontaneous disassembly a few months ago, and our darling SpaceX's Falcon 9 1.1 has only been in use since 2013. ULA's Delta and Atlas have longer and better track records and much higher payload capacity than the Antares or Falcon 9.

On top of that, SpaceX and Orbital have never handled classified payloads before, so that's training and time and effort on the part of the USAF.

While I wouldn't be surprised if there's some palm-greasing going on behind the scenes between USAF and ULA, I also can't blame them for not trusting startups with billion dollar spy satellites.

Comment Re:This reminds me... (Score 5, Informative) 145

You're describing 'TurboCache' (a marketing name if ever there was one).

It wasn't a secret, it was only on very low end cards, and ATI was already doing the same with 'HyperMemory'. Intel, for their part, was exclusively using system RAM at the time (and largely still is).

So what graphics *have* you been buying for the last decade?

Comment Re:Remember when you guys applauded Holder... (Score 1) 385

Technically this is the FBI, so you should be pissed off at Comey, not Holder. Comey is officially Holder's subordinate at the DoJ, though I'm not sure how much the FBI chief really answers for.

And you won't have to wait so long for Holder's departure; he announced his resignation months ago and Obama already tapped his replacement.

Slashdot Top Deals

"And remember: Evil will always prevail, because Good is dumb." -- Spaceballs

Working...